Just ./configure --enable-logging=p doesn't do any good, the default config options just don't work most of the time, there are couple dozen options and you need to understand each of them.
I don't care what qmailrocks.org says. If you look at your error again, it has something to do with mysql, either it wasn't installed or configured probably or was installed to a non-standard location.

Patch for vmysql.h error

Michael.,

I've just published a patch for that error. The error is usually the result of using an incompatible version of the GCC compiler. You can patch Vpopmail with the patch now available on Qmailrocks.org and that should fix the problem and allow you to successfully compile Vpopmail.

Hi, I ran the patch and am still having errors when I run make. I am indeed very much a newbie when it comes to linux, but I've followed all the directions and everything's worked out fine up to this point. I'm running redhat 9. I would greatly appreciate any help that anyone has to offer. Here's what I get when I run make after running the patch.

vpopmail error

Michael,

Do you have mysql installed on your server? If not, install mysql client and server. Also, when you try to install vpopmail, make sure that you delete the current vpopmail source directory and then unpack the tarball to get a nice fresh installation.

rm -rf /package/vpopmail-5.2.2

tar zxvf vpopmail-5.2.2.tar.gz

If you still can't get it installed right, go to qmailrocks.org, send me an e-mail and I'll see what I can do to help.